Very Reliable and Hard Wearing.These Draw Slides are great for any environment whether it be for work or leisure.They are able to be used in a number of application from camper trailers to vans and everything in between.One of the main features of these Draw Slides is that it is a Lock In & Lock Out, which means that when it id the closed position it is locked and won’t slide open.The same goes when it is in the open position.